HP EliteBook 8770w Manual

Remove the webcam module:
1.Lift the WLAN antenna cables (1), and then remove the WWAN antenna cables (2).
2.Remove the webcam cable (1) from the hinges and then disconnect the webcam cable from the
display enclosure (2).
3.Remove the webcam module from the display enclosure (3).
Reverse this procedure to install the webcam module.
Top cover
DescriptionSpare part number
Top cover (includes TouchPad) 688747-001
Component replacement procedures 83 

Before removing the top cover, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the battery (see 
Battery on page 51).
5.Remove the service access cover...

3.Remove the two Phillips M2.5x3 screws in the optical drive/upgrade drive bay (1) and the four
Phillips M2.5x3.0 screws inside the battery bay (2).
4.Disconnect the power button board cable (1). Disconnect the TouchPad cable on the left (2) and
the right sides (3).
5.Disconnect the fingerprint reader cable (4) and then disconnect the application board cable (5).
6.Position the computer right-side up.
Component replacement procedures 85 

7.Grasp the top cover by the hole in the optical disk drive/upgrade drive bay and lift up the front
edge of the top cover (1).
8.Remove the top cover from the base enclosure (2).
9.If it is necessary to replace the TouchPad:
a.Lift the adhesive tape (1), lift and release the TouchPad cable from the opening in top cover
(2), and then release the TouchPad cable (3).
b.Remove the three screws (1) securing the TouchPad to the top cover.
c.Release the TouchPad from the front clip (2) securing the TouchPad to...

d.Release the TouchPad from the front right side clip (3) and then remove the TouchPad
from the top cover.
Reverse this procedure to install the top cover and TouchPad.
NOTE:In reversing this procedure, make sure that the display latch assembly actuator lines up
correctly with the top cover to avoid damaging any components.
Component replacement procedures 87 

Display assembly
DescriptionSpare part number
Display panel, 43.9 cm (17.3 in), High Definition Plus (HD+) Anti-Glare (AG) LED WVA without
webcam691223-001
Display panel, 43.9 cm (17.3 in), FHD AG LED WVA 691224-001
43.9 cm (17.3 in), FHD AG RGB LED UVWA Dream Color with webcam (not available with HP
Mobile Broadband)688736-001
43.9 cm (17.3 in), FHD AG RGB LED UVWA Dream Color without webcam (not available with HP
Mobile Broadband)688735-001
Display Hinge Kit652528-001
Display hinge covers652529-001...

2.Remove the tape (1) that secures the WLAN and WWAN cables to the system board. (2).
3.Turn the computer right side up, facing you. Feed the WLAN and WWAN cables through the
hole next to the keyboard screw (1), and then lift the cable free of the routing areas (2).
Disconnect the webcam cable (3).
4.Position the computer with the rear towards you.
CAUTION:Support the display assembly when removing the display screws in the following
steps. Failure to support the display assembly can result in damage to...

5.Disconnect the display panel cable (1), and then remove the cable (2).
NOTE:Make sure all cables are freed from the clips in the routing channel.
6.Turn the unit around, and then remove the Torx M2.5x7.0 screws (1) that secure the display
hinges to the base enclosure. Next, remove the Torx M2.5x3.0 screws (2) that secure the hinge
cover to the base enclosure. Remove the four 8 millimeter Torx screws (3) that secure the hinge
cover to the base enclosure.
90 Chapter 4   Removal and replacement procedures 

7.Position the computer with the rear toward you. Lift the rear hinges and remove.
8.Remove the two 6 millimeter Torx screws securing the display panel to the base enclosure (1)`,
and then remove the display panel (2).
Reverse this procedure to reassemble and to install the display assembly.
Power button board
DescriptionSpare part number
Power button board688749-001
Component replacement procedures 91 

Before removing the power button board, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the battery (see 
Battery on page 51)
5.Remove the service access...